Study on differential mode conducted interference of trigger circuit of high-power thyristors in pulsed power supply

Abstract

The trigger circuits of high-power thyristors in pulsed power supply (PPS) contain a large number of pulse transformers, switching MOSFETs (SMFETs) and other passive devices. Fast on-off of SMFETs and pulse transformers often lead to differential mode conducted interference (DMCI) problems in trigger circuits of high-power thyristors. This paper mainly disscusses DMCI problems in trigger circuits of high-power thyristors in the following aspects: initially, circuit models of high-frequency parasitic parameters of pulse transformer and SMFET are established; next, principles of DMCI in trigger circuits of high-power thyristors are investigated; furthermore, DMCI suppression methods are also analyzed; ultimately, experiments have been carried out to verify the theoretical analysis.

Design of automotive mechanical automatic transmission system based on torsional vibration reduction

“…The research shows that most of the interference enters the system through the coupling of the power supply, so the reliability of the power supply largely determines whether the auto mechanical automatic transmission system can run stably. The generator output is connected to the system power supply step-down circuit through the power supply anti-interference circuit [11,12]. The power anti-interference circuit is shown in Fig.…”